A group of students had their IQs measured at the start, middle, and end of a school year. The three means, respectively, were 125.5, 127.5, and 130.5. A one-way, repeated measures ANOVA was used to analyze the data and the results were F(2, 18) = 0.12, p > .05. Use the summary table below to conduct post-hoc tests as appropriate:

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Source of Variability Squares Subjects Treatment Residual Total Degrees of Sum of Mean ratio Square Freedom 4,917.50 126.67 2 0.12 63.34 9,590.00 14,634.17 18 532.78 29